Volcano earthquake report for Tuesday, 14 Sep 2021
World map showing volcanoes with shallow (less than 20 km) earthquakes within 20 km radius during the past 24 hours on 14 Sep 2021 Number in brackets indicate nr of quakes.

Quakes detected near: Askja (7 quakes between mag 0.1-1.1), Brennisteinsfjöll (1 quake mag 1.1), Buzzard Creek (1 quake mag 1.5), Cabalian (1 quake mag 2.8), Clear Lake (19 quakes between mag 0.4-1.4), Coso (9 quakes between mag 0.4-1.1)
Etna (2 quakes between mag 1.7-3.0), Eyafjallajökull (1 quake mag 1.6), Graciosa (1 quake mag 2.5), Grímsvötn (1 quake mag 1.3), Herdubreid (15 quakes between mag 0.2-1.0), Hrómundartindur (4 quakes between mag 0.8-1.4), Ilopango (1 quake mag 2.5), Krísuvík (6 quakes between mag 0.9-2.2), La Palma (285 quakes between mag 1.3-3.5), Lassen (1 quake mag 1.3), Mammoth Mountain (1 quake mag 1.2), Maunaloa (1 quake mag 2.1), Mono Lake (2 quakes between mag 0.5-1.7), Newberry (1 quake mag 1.0), Nisyros (29 quakes between mag 1.5-3.6), Reykjanes (16 quakes between mag 0.5-2.1), Salton Buttes (1 quake mag 1.3), Taranaki (1 quake mag 1.7), Vesuvius (1 quake mag 1.2), unnamed submarine (1 quake mag 4.7) (updated 18h50)

Note: Earthquakes within 20 km from and at depths less than 20 km under active volcanoes are reported. The list is not complete because many volcanoes are not monitored and/or seismic data in high resolution is not available publicly.

Volcanoes with recent earthquakes above magnitude 2 or more than 10 quakes are listed below:


Cabalian volcano (Central Philippines): magnitude 2.8 earthquake

A magnitude 2.8 earthquake occurred at the volcano 1 hour 45 minutes ago. The quake, which might be volcanic in origin, was located at a depth of 1.0 km depth at 14 km distance NNE from the volcano.
Earthquake details:
2.8 quake Philippine Sea, 6 km northeast of Hinundayan, Philippines, Sep 15, 2021 1:05 am (GMT +8) (14 km NNE)All earthquakes at Cabalian

Clear Lake volcano (California): 19 earthquakes up to magnitude 1.4

Possible earthquake swarm: 19 earthquakes occurred near (under) the volcano during 17 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 6.2 and 1.0 km.
Earthquake details: (only 5 largest)
1.4 quake 10km NW of The Geysers, CA, Sep 14, 2021 4:32 am (GMT -7) (16 km SSW)1.2 quake 8km WNW of Cobb, CA, Sep 13, 2021 3:26 pm (GMT -7) (15 km SSW)1.2 quake 8km WNW of Cobb, CA, Sep 13, 2021 8:55 pm (GMT -7) (13 km SSW)0.9 quake 7km W of Cobb, CA, Sep 13, 2021 6:48 pm (GMT -7) (16 km S)0.9 quake 9km NW of The Geysers, CA, Sep 13, 2021 10:33 pm (GMT -7) (15 km SSW)All earthquakes at Clear Lake

Etna volcano (Italy): 2 earthquakes up to magnitude 3.0

2 earthquakes occurred near (under) the volcano during 11 hours, the last being recorded quake 13 hours ago. Hypocenter depths ranged between 10.0 and 0.3 km.
Earthquake details:
Reported seismic-like event (likely no quake): 30 km north of Catania, Sicily, Italy, Sep 14, 2021 7:58 am (GMT +2) (0 km SW)1.7 quake 17 km northeast of Adrano, Catania, Sicily, Italy, Sep 13, 2021 8:58 pm (GMT +2) (0 km SSW)All earthquakes at Etna

Graciosa volcano (Azores): magnitude 2.5 earthquake

A magnitude 2.5 earthquake occurred at the volcano 6 hours ago. The quake, which might be volcanic in origin, was located at a depth of 0 km depth at 17 km distance ESE from the volcano.
Earthquake details:
2.5 quake North Atlantic Ocean, 22 km southeast of Santa Cruz da Graciosa, Portugal, Sep 14, 2021 12:50 pm (GMT +0) (17 km ESE)All earthquakes at Graciosa

Herdubreid volcano (Iceland): 15 earthquakes up to magnitude 1.0

Possible earthquake swarm: 15 earthquakes occurred near (under) the volcano during 19 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 12.1 and 4.2 km.
Earthquake details: (only 5 largest)
1.0 quake Iceland: 3.7 Km S of Herðubreið Sep 13, 2021 11:30 pm (GMT +0) (3 km S)0.9 quake Iceland: 3.7 Km S of Herðubreið Sep 13, 2021 9:58 pm (GMT +0) (4 km S)0.9 quake Iceland: 7.2 Km NNW of Herðubreið Sep 14, 2021 3:28 pm (GMT +0) (7 km NNW)0.9 quake Iceland: 3.3 Km S of Herðubreið Sep 13, 2021 9:50 pm (GMT +0) (3 km S)0.8 quake Iceland: 7.1 Km NNW of Herðubreið Sep 14, 2021 3:10 pm (GMT +0) (6 km NNW)All earthquakes at Herdubreid

Ilopango volcano (El Salvador): magnitude 2.5 earthquake

A magnitude 2.5 earthquake occurred at the volcano 5 hours ago. The quake, which might be volcanic in origin, was located at a depth of 4.0 km depth at 3 km distance WSW from the volcano.
Earthquake details:
2.5 quake La Paz, 14 km east of San Salvador, El Salvador, Sep 14, 2021 7:57 am (GMT -6) (3 km WSW)All earthquakes at Ilopango

Krísuvík volcano (Reykjanes Peninsula, Iceland): 6 earthquakes up to magnitude 2.2

6 earthquakes occurred near (under) the volcano during 14 hours, the last being recorded quake 6 hours ago. Hypocenter depths ranged between 7.8 and 4.3 km.
Earthquake details: (only 5 largest)
2.2 quake Iceland: 1.2 Km SSW of Keilir Sep 14, 2021 2:40 am (GMT +0) (4 km W)1.4 quake Iceland: 1.7 Km S of Keilir Sep 14, 2021 4:21 am (GMT +0) (4 km W)1.4 quake Iceland: 1.3 Km SSW of Keilir Sep 13, 2021 10:05 pm (GMT +0) (4 km W)1.2 quake Iceland: 0.9 Km SW of Krýsuvík Sep 14, 2021 4:03 am (GMT +0) (6 km SSE)1.1 quake Iceland: 3.7 Km NE of Krýsuvík Sep 14, 2021 1:47 am (GMT +0) (4 km ESE)All earthquakes at Krísuvík

La Palma volcano (Canary Islands): 285 earthquakes up to magnitude 3.5

Possible earthquake swarm: 285 earthquakes occurred near (under) the volcano during 23 hours, the last being recorded quake 20 minutes ago. Hypocenter depths ranged between 13.0 and 6.0 km.
Earthquake details: (only 5 largest)
3.5 quake 9.7 km southeast of Los Llanos de Aridane, Tenerife, Canary Islands, Spain, Sep 14, 2021 7:00 am (GMT +1) (5 km W)3.4 quake 9.8 km southeast of Los Llanos de Aridane, Tenerife, Canary Islands, Spain, Sep 14, 2021 12:10 am (GMT +1) (6 km W)3.3 quake 9.9 km southeast of Los Llanos de Aridane, Tenerife, Canary Islands, Spain, Sep 14, 2021 12:32 am (GMT +1) (3 km W)3.2 quake 10.2 km southeast of Los Llanos de Aridane, Tenerife, Canary Islands, Spain, Sep 14, 2021 12:14 am (GMT +1) (3 km NW)3.1 quake 9.3 km southeast of Los Llanos de Aridane, Tenerife, Canary Islands, Spain, Sep 14, 2021 5:52 am (GMT +1) (4 km W)All earthquakes at La Palma

Maunaloa volcano (Hawai'i (Big Island)): magnitude 2.1 earthquake

A magnitude 2.1 earthquake occurred at the volcano 4 hours ago. The quake, which might be volcanic in origin, was located at a depth of 2.5 km depth at 16 km distance E from the volcano.
Earthquake details:
2.1 quake 24 Km WNW of Volcano, Hawaii, Sep 14, 2021 4:40 am (GMT -10) (16 km E)All earthquakes at Maunaloa

Nisyros volcano (Greece): 29 earthquakes up to magnitude 3.6

Possible earthquake swarm: 29 earthquakes occurred near (under) the volcano during 17 hours, the last being recorded quake 36 minutes ago. Hypocenter depths ranged between 17.0 and 1.0 km.
Earthquake details: (only 5 largest)
3.6 quake Aegean Sea, 49 km south of Kos, Dodecanese, South Aegean, Greece, Sep 14, 2021 8:19 pm (GMT +3) (14 km S)3.1 quake Aegean Sea, 43 km south of Kos, Dodecanese, South Aegean, Greece, Sep 14, 2021 4:27 pm (GMT +3) (13 km SE)3.0 quake Aegean Sea, 45 km south of Kos, Dodecanese, South Aegean, Greece, Sep 14, 2021 7:44 pm (GMT +3) (10 km SSE)2.5 quake Aegean Sea, 47 km south of Kos, Dodecanese, South Aegean, Greece, Sep 14, 2021 8:35 pm (GMT +3) (11 km S)2.4 quake Aegean Sea, 46 km south of Kos, Dodecanese, South Aegean, Greece, Sep 14, 2021 1:35 pm (GMT +3) (9 km S)All earthquakes at Nisyros

Reykjanes volcano (Reykjanes Peninsula, Iceland): 16 earthquakes up to magnitude 2.1

Possible earthquake swarm: 16 earthquakes occurred near (under) the volcano during 13 hours, the last being recorded quake 4 hours ago. Hypocenter depths ranged between 6.1 and 1.7 km.
Earthquake details: (only 5 largest)
2.1 quake Iceland: 7.0 Km NNE of Reykjanestá Sep 14, 2021 2:26 am (GMT +0) (7 km SW)1.9 quake Iceland: 6.9 Km NNE of Reykjanestá Sep 14, 2021 3:02 am (GMT +0) (7 km SW)1.4 quake Iceland: 7.1 Km NNE of Reykjanestá Sep 14, 2021 2:24 am (GMT +0) (7 km SW)1.3 quake Iceland: 7.0 Km NNE of Reykjanestá Sep 14, 2021 2:07 am (GMT +0) (7 km SW)1.2 quake Iceland: 7.0 Km NNE of Reykjanestá Sep 14, 2021 2:30 am (GMT +0) (7 km SW)All earthquakes at Reykjanes

unnamed submarine volcano (Admiralty Islands): magnitude 4.7 earthquake

A magnitude 4.7 earthquake occurred at the volcano 14 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 18 km distance WNW from the volcano.
Earthquake details:
4.7 quake Bismarck Sea, Papua New Guinea, Sep 14, 2021 3:07 pm (GMT +10) (18 km WNW)All earthquakes at unnamed submarine
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